Description
Replace the AV control unit if this DTC is displayed.
| Part name | Description | 
| AV CONTROL UNIT | 
		
  | 
	
DTC Logic

U1200 AV control unit
U1218 AV control unitBasic inspection
   	DIAGNOSIS AND REPAIR WORKFLOW
Trouble Diagnosis Flow Chart
Trouble Diagnosis Procedure
INTERVIEW WITH CUSTOMER 
Interview with the customer is important to detect the root cause of CAN 
communication system errors and to 
understand vehicle condition and symptoms for proper trouble diagnosis ...
   	
B2191 difference of key
   	Description
Performs ID verification through BCM and Intelligent Key 
when push-button ignition switch is pressed.
Prohibits the start of engine when an unregistered ID of Intelligent Key is 
used.
DTC Logic
DTC DETECTION LOGIC
DTC CONFIRMATION PROCEDURE
1.PERFORM DTC CONFIRMATION PROCED ...
   	
Diagnosis system (audio unit)
   	Diagnosis Description
Self-diagnosis mode can perform the following items.
	Versions display
	Channel check diagnosis
	Key check diagnosis
	AV communication diagnosis
VERSIONS DISPLAY FUNCTION
	Turn ignition switch ON.
	Turn the audio unit off.
	While pressing "1" button, turn vol ...